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We analyze Super-Kamiokande, SNO, and photospheric magnetic-field data forthe common time interval, namely the SNO D2O phase. Concerning rotationalmodulation, the magnetic-field power spectrum shows the strongest peaks at thesecond and sixth harmonics of the solar synodic rotation frequency [3 nu(rot)and 7 nu(rot)]. The restricted Super-Kamiokande dataset shows strong modulationat the second harmonic. The SNO D2O dataset shows weak modulation at thatfrequency, but strong modulation in the sixth-harmonic frequency band. Weestimate the significance level of the correspondence of the Super-Kamiokandesecond-harmonic peak with the corresponding magnetic-field peak to be 0.0004,and the significance level of the correspondence of the SNO D2O sixth-harmonicpeak with the corresponding magnetic-field peak to be 0.009. By estimating theamplitude of the modulation of the solar neutrino flux at the second harmonicfrom the restricted Super-Kamiokande dataset, we find that the weak power atthat frequency in the SNO D2O power spectrum is not particularly surprising.Concerning 9.43 yr-1, we find no peak at this frequency in the power spectrumformed from the restricted Super-Kamiokande dataset, so it is no surprise thatthis peak does not show up in the SNO D2O dataset, either.Comment: 32 pages, 8 tables, 16 figure

Comparative Analysis of Super-Kamiokande and SNO Solar-Neutrino Data and the Photospheric Magnetic Field